Home / 1,572.36-2,356.74-1,085.64

Finding the Fourth Proportional to 1,572.36, 2,356.74 and 1,085.64

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Solution

The fourth proportional to 1,572.36, 2,356.74 and 1,085.64 is: 1,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.36 : 2,356.74 = 1,085.64 : x
  2. Step 2: Convert to fraction form
    1,572.36/2,356.74 = 1,085.64/x
  3. Step 3: Cross multiply
    1,572.36x = 2,356.74 × 1,085.64
  4. Step 4: Simplify right side
    1,572.36x = 2,558,571.21
  5. Step 5: Solve for x
    x = 2,558,571.21/1,572.36
  6. Step 6: Final answer
    x = 1,627.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.